Slitting-machine or the like.



PATENTED SEPT. 29, i903.v

B. B. sTIMPsQN. Y SLITTKING MACHINE 0R THB L1KE.

.FM ,f

@15% n Gozncx/ v E GENIS PETERS CO PHDTD LITRO WA NINGTON D C EDWlN BALL STIMPSON,

smTTiNc-MAGHI atented September 29, 1903. PATENT OFFICE.

OF NEW YORK, N. Y.

NE R THE LiKE.l

SPEGFICATION forming part of Letters Patent No. 740,201, dated September 29, 1903.

Application filed November 2B, 190

To all whom t may concern: Be it known that l, EDWIN BALL SrrMrson, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, and city and State of New York, have invented certain new and useful Improvements in Slit-f ting-Machines or the Like, of which the following is a specification.

This invention relates to the class of maro chines for slitting sheet material-such as leather, for example-wherein Ytwo rolls are employed, one with circular knives properly spaced and the otherM with circumferential grooves into which the knives onthe'other roll enter. It is found that the fragments or particles from the material get Vinto and clog the circumferential grooves in the latter roll, and thus interfere materially with the cutting operation; and it is the object of the present zo invention to provide a means for clearing said grooves and keeping them clear.

In the accompanying drawings,which illustrate an embodiment of the invention, Figure 1 is a vertical transverse section of so much of a slitting-machine as is necessary to illustrate the application of the present invention thereto. Fig. 2 is a fragmentary rear view of the cleaning-stripper detached. Fig. 3 is a plan view of a part of the grooved or upper 3o roll, showing the strippers in cross-section engaging the grooves therein.

As the machine seen in Fig. 1 is well known it has not been deemed necessary to fully illustrate it. It is sufficient to say that l is 3 5 the main frame, usually ofcast-iron, and having a work bed or table 2 to receive the maferial to be slitted. 3 is the lower or cutting roll, and 1i is the upper-0r circumferentiallygrooved roll. The arrows show the direction in which the rolls rotate and the direction in which the material moves when being fed to the rolls. The cutters 5 on the lower rollenter the grooves 6 on the upper roll.` The usual plates are employed to support the inaterial as it passes between the rolls. These are slotted to receive thel cutters on the cute ting-roll.

he cleaner or stripper for the grooves vin the upper roll consists of 'a plate 7, adapted 5o to be secured by screws or otherwise to the cross-bar 1 of the frame above, and a plural- 2. Serial No. 132,888. iNo model.)

7 and so spaced as to enter the respective grooves 6 in the roll 4, as clearly shown in Figs. l and 3. A

Preferably the fingers 8 will be made from sheet metal of such thickness as to fit into the groove snugly but not too tightly, and preferably, also, it will have the contour vclearly seen in Fig. l, the bearing-face being curved so as to fit snugly up to the roll at the bottom of the groove. It may be secured by means of two prongs or tenons 9, which enter apertures 10 in the plate 7 and are then riveted. The apertures in the plate are seen in Fig. 2, where one of the fingers has been omitted, so as to disclose them.

The operation will be readily understood. As the grooved roll rotates any particles or fragments carried up in the grooves 6 are ar- 7 rested and driven out by the fingers 8.

It will be noted that the function of the fingers 8 is not to prevent the slitted material from wedging between the cutters 5 and be'- ing carried around by the cutting-roll. This 7 is the function of the slotted plates,over which the slitted material passes. The fingers engage the narrow circumferential grooves in the upper roll and remove the liner particles these grooves and break the edges of the cutters. The edge of the plate 7, as seen inliig. l, is slightly beveled and fits up closely Vto the surface of the roll 4, thus serving as a suitable scraper therefor. v

Obviously the stripping device maybe applied to any cutting or slitting machine of this character where a grooved roll like the rolle is employed.

Having thus described my invention, I 9 claim-f- 1. In a machine for the purpose specified, the combination with a cutting-roll and a circumferentially-grooved roll which coperates therewith, of means for cleaning and keeping g clean the grooves in the last-named roll, said means consisting of fixed fingers which engage the respective grooves in the roll and bear on the roll at the bottom of said grooves.

2. A machine for comprising a mounted therein, having in the purpose specified, frame, a cutter-roll rotatively a rollabove the cutter-roll it narrow circumferential grooves ity of iin gers 8, which are secured to the plate to receive the respective cutters on the lower which would otherwise pack into and clog up 8o roll, means for preventing the slitted material from being carried about the lower roll between the cutters, and means for cleaning the grooved upper roll, said means comprising the ixed plate and the fingers thereon which engage the respective grooves therein In witness whereof I have hereunto signed my name, this 21st day of November, 1902, in 1o the presence of two subscribing witnesses.

EDWIN BAL'L STIMPSON.

Vitnesses:

PETER A. Ross, WILLIAM J. FIRTH. 

